After wards the participants will supplement with either Placebo or Extreme Endurance (random assignment for order) for ten days. The first 4 days will the participants will ingest four tablets in the morning and evening (8 tablets total) followed by 6 days of three tablets in the morning and evening (6 tablets total). Following the supplementation period the participants will report to the human performance lab where a mask will be fitted to collect expired gases and will perform a 25 watt ramp protocol on an electronically braked cycle ergometer. During this test the participant will have a short warm up period, and then a computer will automatically adjust the workload on the bike such that a slope of 25 watts/min is achieved. The test will conclude when the participant reaches volitional exhaustion. Expired gases will be assessed with a COSMED QUARK CPET system. Prior to, and every two minutes during the exercise lactate will be assessed via dermal puncture and a handheld monitor. Ten minutes after the cessation of exercise, a venipuncture will be performed in the antecubetal space and blood will be collected into a serum separator tube. This blood will be spun down in a clinical centrifuge and the serum drawn off and ammonia determined via enzymatic reaction. The remaining serum will be aliquoted and stored at -80 degrees Celsius for later analysis (muscle damage, oxidative stress, inflammation). Participants will then have a ten day rest period after which they will begin the 10 day supplementation period and exercise trial with the opposite supplement.